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View Full Version : PBS Colors?


Pilotwhois47yrs
01-30-2018, 12:13 PM
What do the colors mean in the awards for PBS bidding?


MagPBS
01-30-2018, 01:18 PM
What do the colors mean in the awards for PBS bidding?

Not looking at it right now so going off memory on colors.

Lines:
Blue = awarded mortally
Purple = awarded via coverage

Reserve:
Yellow = awarded normally
Magenta = awarded via coverage.

Pilotwhois47yrs
01-30-2018, 04:13 PM
I notice that mostly all the FO's at IAD got purple. Can you explain?


MagPBS
01-30-2018, 05:08 PM
I notice that mostly all the FO's at IAD got purple. Can you explain?

That most of them were unstacked. As itís been for months now on the fo side in pretty much every base.

If your looking for information on unstacking, I suggest checking out the training material on the alpa website.

calmwinds
01-30-2018, 06:41 PM
Not looking at it right now so going off memory on colors.

Lines:
Blue = awarded mortally
Purple = awarded via coverage

Reserve:
Yellow = awarded normally
Magenta = awarded via coverage.

So, all reserves were awarded normally in IAH.

MagPBS
01-31-2018, 02:36 AM
So, all reserves were awarded normally in IAH.

Sound right. No point in unstacking reserves when you donít have any.

calmwinds
01-31-2018, 04:07 AM
Sound right. No point in unstacking reserves when you donít have any.

They have 7 pilots on reserve in February in IAH. Mostly senior. So, I am guessing the got what they bid.

Is Long Call Reserve simply a pipedream or is it being awarded at any base?

MagPBS
01-31-2018, 08:29 AM
They have 7 pilots on reserve in February in IAH. Mostly senior. So, I am guessing the got what they bid.

Is Long Call Reserve simply a pipedream or is it being awarded at any base?

DFW and IAD ca. Got lcr

calmwinds
01-31-2018, 08:50 AM
DFW and IAD ca. Got lcr

So, someday a possibility then for IAH when it is properly staffed.

Pilotwhois47yrs
01-31-2018, 03:30 PM
"[Un-Stacking]
This algorithm is used in conjunction with greedy algorithm (http://aos.us/classic/AlgorithmGreedy.html) to control the open time (the amount of uncovered pairings at each calendar date).

"Stacking" happens during the process of junior awarding when the number of the pairings needed to be covered at a given date is equal to the number of available crewmembers. The "available crewmembers" means those junior crewmembers who have not been awarded yet and are legal to cover a pairing at that date. Each given date in a bid month will have a "stack" to control open time.

When that point is reached, every available junior crewmember has to cover a pairing at that date to resolve the open time issue regardless of his/her preferences. This impacts the satisfaction of junior crewmembers in order to achieve this company goal.

To improve, the core traces back to the awarded senior crewmembers and sees if it is possible to let a senior cover a pairing at that date. This approach is called "un-stacking", because it reduces the stack at the given date. It is only good if the pairing being replaced is something junior crewmembers prefer, and the replacement does not degrade the senior crewmember's preferences and there is no violation of legality.

Greedy algorithm has no ability to constantly monitor the open time, and it keeps awarding lines until it reaches the stacking point, then uses inefficient "un-stacking" to improve the satisfaction of junior crewmembers. The result is questionable."

Pilotwhois47yrs
01-31-2018, 03:34 PM
PBS (http://aos.us/classic/WhatIsPBS.html) Core Algorithms

[Greedy]
This algorithm uses a "First Come First Serve" concept. For each crewmember in a group of the same bid package, starting with the most senior, it awards the best legal line based on his/her preferences without a conflict with his/her carry-in and pre-defined activities, then removes the awarded pairings from those available. In the same way it awards the best legal line for the next crewmember. This process is repeated until the most junior crewmember has been allocated a line.

The best line is defined by one with the most prioritized preferences or the most points (if it is a weighted/pointed (http://aos.us/classic/BiddingMethodology.html) system) of the preferred pairings and line characteristics. (In the case of more than one equal important best lines available, an arbitrary one will be awarded.)

Greedy Algorithm does not consider the preferences of junior crewmembers, it offers lowest overall satisfaction.

Using this algorithm alone will not control open time. Uncovered pairings will be left on any date throughout the bid month, especially during holiday periods as a result of most crewmembers preferring off on those days. Therefore, it requires more reserve crewmembers to cover these uncovered pairings.

In brief, the greedy algorithm cannot achieve high overall satisfaction and cannot control open time. It cannot create the line holders required. Unfortunately, it is the fundamental algorithm being used by almost every PBS on the market today.

calmwinds
01-31-2018, 06:17 PM
"[Un-Stacking]
This algorithm is used in conjunction with greedy algorithm (http://aos.us/classic/AlgorithmGreedy.html) to control the open time (the amount of uncovered pairings at each calendar date).

"Stacking" happens during the process of junior awarding when the number of the pairings needed to be covered at a given date is equal to the number of available crewmembers. The "available crewmembers" means those junior crewmembers who have not been awarded yet and are legal to cover a pairing at that date. Each given date in a bid month will have a "stack" to control open time.

When that point is reached, every available junior crewmember has to cover a pairing at that date to resolve the open time issue regardless of his/her preferences. This impacts the satisfaction of junior crewmembers in order to achieve this company goal.

To improve, the core traces back to the awarded senior crewmembers and sees if it is possible to let a senior cover a pairing at that date. This approach is called "un-stacking", because it reduces the stack at the given date. It is only good if the pairing being replaced is something junior crewmembers prefer, and the replacement does not degrade the senior crewmember's preferences and there is no violation of legality.

Greedy algorithm has no ability to constantly monitor the open time, and it keeps awarding lines until it reaches the stacking point, then uses inefficient "un-stacking" to improve the satisfaction of junior crewmembers. The result is questionable."

What happens to your forum name when you turn 48?

qazWSX
01-31-2018, 08:27 PM
What happens to your forum name when you turn 48?

It will exceed your IQ